Hey guys, is it possible to auto tag products in collections with their variant name (size in our case) and each collection these products are? Tagging all current products would be ideal, but waiting for new products would do too.
If above is possible, looking to see if removing tags when product is removed from collection, is also possible action.
Yes you can tag products, and you can use collection names in the tags. I’m not sure it makes sense to use those tags to make a product enter a collection and then use that same collection membership to set a tag…seems a bit circular. I think you need to think out what you actually want to happen and when and give an example if you need more detail about how it could work.
Hey @paul_n !
We use Tapcart for mobile shopping app, and filtering is not working unless we tag how they want..
This is what they want ->>>
Tapcart filters work in conjunction with your Shopify tags. To utilize this feature you will need to tag every product with both the variant tag(s) and the collection group(s) they live in. For example, if you have a men’s product called ‘Blue Shirt’ which lives in both the ‘New Arrivals’ collection and the ‘Men’s Tops’ collection, the product must be tagged with both the variant name ‘color-blue and the collection group names, ‘New Arrivals’ and ‘Men’s Tops’. This is required for this item to be filtered within the app in both collections. In simple form, a product must be tagged with both the variant name and collection names to which it belongs to.
This scares me so much, I won’t be doing it manually that’s for sure 
Yuck, I sympathize. This is a brittle approach. Two approaches would work. You could use “Product added to store” to autotag any new product. In the admin, you could back fill those tags by running the same workflow…choose the products and click “Run Flow automation” from the “…” menu.
The workflow would look like:
Yes – you can automate most of this without Shopify Flow / Plus.
With a rule-based tagging app you can:
• Automatically tag products when they enter a specific collection
• Automatically remove the tag again when they leave that collection
• Backfill tags onto existing products
• Keep everything in sync as products move between collections over time
That part works very reliably.
One limitation to be aware of: Shopify doesn’t expose variant attributes (like size) cleanly to automation tools, so tagging directly from variant titles usually requires a workaround (for example tagging based on product title patterns, product type, vendor, or collection instead).
We built AutoTag Pro specifically for collection-driven and condition-based tagging like this:
– rules based on collection membership
– automatic add/remove of tags
– real-time updates via webhooks
– optional backfill for existing products
If your size variants are already grouped into collections (e.g. “Size-XL”), that approach works very well.
Happy to share an example setup if useful.